Answer:
-5x-10=10
add 10 to both sides (why? to cancel out the -10 on the left side and make it 0 since 10+-10 = 0)
-5x=20
divide both sides by -5. to isolate x.
x=-4
Explanation:
x = -4
10 + 10 = 20 / -5 = -4
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